Professor Wei Hua proposes that the main causes of Hashimoto's thyroiditis(HT)are emotional internal injury and improper diet,and the disease is differentiated and treated in three stages:early,moderate and late,with emphasis on soothing the liver and invigorating the spleen in the early stage,on resolving phlegm and removing blood stasis in the moderate stage and on warming Yang and tonifying deficiency in the late stage,which has shaped his therapeutic experience:chronic treatment for chronic disease,dual regulation of emotion and diet,grasping the key points and the single pulse,differentiating the masses in the phased treatment.